diff --git a/src/Illuminate/Database/Eloquent/Model.php b/src/Illuminate/Database/Eloquent/Model.php
index 037ddfb35ff6..134d06a42d59 100755
--- a/src/Illuminate/Database/Eloquent/Model.php
+++ b/src/Illuminate/Database/Eloquent/Model.php
@@ -798,7 +798,7 @@ public function morphTo($name = null, $type = null, $id = null)
         // If the type value is null it is probably safe to assume we're eager loading
         // the relationship. When that is the case we will pass in a dummy query as
         // there are multiple types in the morph and we can't use single queries.
-        if (is_null($class = $this->$type)) {
+        if (empty($class = $this->$type)) {
             return new MorphTo(
                 $this->newQuery(), $this, $id, null, $type, $name
             );